And now for the annoying term of the day:
Usage: describes a successful and often pretty obnoxious husband and wife team
("husband and wife team" is another phrase which I hate)
Power couple examples that prove this to be true: Mary Matalin and James Carville, Lynne and Dick Cheney, Angelina Jolie and Brad Pitt, Mei Xiang and Tian Tian
The term's high-intensity tenor is what gets me in particular. It's another one of those journalistic cliches that's often used in the context of politics or business to lend a snappy, knowing air to a piece.
Expressions in the power couple family: power lunch, business casual, power nap, heads down, suit up